Incubator



FIG. 1 is a front perspective view of an incubator of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM We claim the ornamental design for an incubator, as shown and described. 